The Role of Mammals in Creating and Modifying Seedshadows in Tropical Forests and Some Possible Consequences of Their Elimination

Stoner, Kathryn E.; Riba‐Hernández, Pablo; Vulinec, Kevina; Lambert, Joanna E.

doi:10.1111/j.1744-7429.2007.00292.x

Cited by 134 publications

(132 citation statements)

References 179 publications

(279 reference statements)

Supporting

Mentioning

121

Contrasting

Unclassified

Order By: Relevance

“…Cullen et al 2005, Soisalo & Cavalcanti 2006, their large area requirements (Sanderson et al 2002b, Cullen et al 2005 and also because they are preferential targets to hunters (Redford 1992, Peres 1996, Cullen et al 2001, Travassos 2011. These factors has conducted to the loss of these animals in tropical forests, promoting profound transformations in forest dynamics and threaten the maintenance of these ecosystems (Stoner et al 2007, Jorge et al 2013, Kurten 2013, Harrison et al 2013). …”

Section: Introductionmentioning

confidence: 99%

Medium and large-sized mammals of the Reserva Ecológica de Guapiaçú, Cachoeiras de Macacu, RJ

2014

View full text Add to dashboard Cite

Medium and large-sized terrestrial mammals develop important functions in ecosystems maintenance. However, this group is the most vulnerable to local extinctions, through habitat loss or hunting. This study inventoried the community of medium and large mammals in the Reserva Ecológica de Guapiaçú (REGUA), Cachoeiras de Macacu, RJ, providing data on species composition, richness and abundance. Species were registered through the use of camera traps, sign survey and visual encounters on pre-existing trails and roads. The study was conducted from January to October 2012, with each month considered as a sample unit. An effort of 1568 cameras-day and 120 km traveled, resulted on 302 records of 22 species of medium and large-sized mammals, belonging to eight orders. This value corresponds to more than three-quarters of the richness described from this group in the Atlantic Forest of Rio de Janeiro state. Five species are under some level of regional, national or global threat. Three game species, Pecari tajacu, Cuniculus paca and Dasyprocta leporina were abundant in the area. The observed richness was comparable to that found in other studies conducted in rain forests. Thus, for its high number of species, including those under some degree of threat, we conclude that REGUA is an important area to mammal conservation, especially in the Atlantic Forest of Rio de Janeiro state.

show abstract

Section: Introductionmentioning

confidence: 99%

Medium and large-sized mammals of the Reserva Ecológica de Guapiaçú, Cachoeiras de Macacu, RJ

2014

View full text Add to dashboard Cite

show abstract

“…Large mammals play key roles in ecosystems, such as seed dispersal, trampling, regulation of prey/predator populations (Boddicker et al 2002;Stoner et al 2007). They require large areas to maintain viable populations (Traill et al 2007).…”

Section: Discussionmentioning

confidence: 99%

Do the Protected Areas Network of the State of Minas Gerais Maintain Viable Populations of the Lowland Tapir (Tapirus terrestris)?

Eduardo¹,

Nunes²,

Brito³

2012

Nat. Conserv.

View full text Add to dashboard Cite

Historically, the creation of protected areas has occupied a forefront role among conservation strategies to protect wildlife. However, the effectiveness of such areas in maintaining viable populations has been a matter of debate. The present study aims to evaluate the efficiency of the protected areas network in the state of Minas Gerais, southeastern Brazil, in maintaining viable populations of Tapirus terrestris. We used the software VORTEX to model the viability of tapir populations in 65 protected areas found in the state. Our results indicate that 14 protected areas are not able to maintain lowland tapir populations in the long-term. It was also observed that 16 protected areas would suffer from genetic erosion and demographic stochasticity. Four protected areas would hold populations under the negative effects of genetic stochasticity. A total of 31 protected areas are predicted to hold viable populations. The results stress the necessity of more efficient and careful planning for resource allocation in the management of protected areas in the state of Minas Gerais, or population declines and local extinctions are expected to affect the lowland tapir in the near future.

show abstract

“…They alternate these seed processing techniques according to phenology patterns, plant species and resource availability (Kaplin and Moermond, 1998;Tsujino and Yumoto, 2009), and may even use various deposition patterns for the same plant species (Albert, 2012;Lambert and Garber, 1998). This creates a unique seed shadow, which could have positive consequences for seed survival (Gross-Camp and Kaplin, 2005;Schupp et al, 2010;Stoner et al, 2007). Research on the seed dispersal capabilities of cercopithecines is available for 21 species (31% of all species; Appendix B).…”

Section: Cercopithecines As Seed Dispersersmentioning

confidence: 99%

“…However, these large frugivores are frequently the most vulnerable in disturbed habitats, because of their large or specialised food requirements and/or because they are targeted by hunters (Campos-Arceiz and Blake, 2011;Corlett, 2007;Sethi and Howe, 2009;Stoner et al, 2007). Conservation management of the largest frugivores is confounded by the large tracts of undisturbed habitat these animals require, and populations cannot be maintained in the long term in regions with a high human presence (Hill et al, 2002;Laurance et al, 2006;Naughton-Treves, 1998).…”

Section: Introductionmentioning

confidence: 99%

The value of disturbance-tolerant cercopithecine monkeys as seed dispersers in degraded habitats

Albert¹,

McConkey²,

Savini³

et al. 2014

Biological Conservation

View full text Add to dashboard Cite

a b s t r a c tHabitat disturbance has caused a global decline in populations of frugivores, with critical consequences for seed dispersal. Large-seeded plants are especially threatened as they depend on a restricted number of large-bodied dispersers that are vulnerable to extinction and cannot maintain populations in most disturbed habitats. Cercopithecine monkeys are potentially key seed dispersers in disturbed habitats, because of the robustness of some species to disturbance and their ability to disperse large seeds. However, the potential ecological roles of the more disturbance-tolerant species are rarely discussed. This review evaluates the seed dispersal role of cercopithecines in disturbed habitats by investigating their ability to tolerate habitat disturbance, their seed dispersal abilities, and the threats to species survival. Cercopithecines are characterised by ecological flexibility; most species adjust their diet, group size, home range size and, often, feeding methods according to resource availability and habitat structure. Consequently, 79% of species are tolerant of varying degrees of habitat disturbance. Cercopithecines are often inconsistent seed dispersers, but they have the capacity to disperse many seeds, large seeds and to disperse them across large distances. They may be among the most important frugivores in altered environments in Asia and Africa. However, many disturbance-tolerant cercopithecine species are targeted by local people as pests, which poses a major threat to their conservation. In conclusion, the management of all disturbance-tolerant cercopithecine species should be re-evaluated given their importance in the regeneration of degraded Asian and African habitats.

show abstract

The Role of Mammals in Creating and Modifying Seedshadows in Tropical Forests and Some Possible Consequences of Their Elimination

Cited by 134 publications

References 179 publications

Medium and large-sized mammals of the Reserva Ecológica de Guapiaçú, Cachoeiras de Macacu, RJ

Medium and large-sized mammals of the Reserva Ecológica de Guapiaçú, Cachoeiras de Macacu, RJ

Do the Protected Areas Network of the State of Minas Gerais Maintain Viable Populations of the Lowland Tapir (Tapirus terrestris)?

The value of disturbance-tolerant cercopithecine monkeys as seed dispersers in degraded habitats

Contact Info

Product

Resources

About